Bag



May 20, 1952 J DOYLE 2,597,305

BAG

Original Filed Dec. 20, 1943 3 Sheets-Sheet l 1 INVENTOR Kall- ATTORN 5 J. F. DOYLE May 20, 1952 BAG 3 Sheets-Sheet 2 Original Filed Dec. 20, 1943 INVENTOR 72/15.: 0o YLE y 20, 1952 J. F. DOYLE 2,597,305

BAG

Original Filed Dec. 20, 1943 3 Sheets-Sheet 3 FIG.I2

INVENTOR J m/Es E 00 Y1. E

BY I I 17 I I s TTORNEY Patented May. 20, 1952 BAG James F. Doyle, Forest Hills, N. Y., assignor to Arkell' Safety Bag" Company, New York, N. Y., a' corporation of New York Continuation of applications Serial No-. 5'14,9 42,

December 20, 1943, and Seriai-No. 61'0,25 8, Aue gust;1 1-,.1945. application November 20, 1946,. Serial-No. 711,189

it-Grams. 1

The present invention relatestobags; and liners for bags and other containers.

One of the objects of the present invention to provide a novel and improved article of manufacture of this character;

In packaging certain products", such as dehydrated food and blood plasma for shipment, it is customary to place the product in' a carton of' cor-'- rugated paper or" cardboard which is enclosed in a bag of a moistureproof paper. The carton is then closed, and the mouth of theb'agi's. closed over the top of the carton so as to" provide" a; moistureproof enclosure for the filled carton. The carton and the bag may then be placed in a second carton of heavy cardboard, andthissecnd carton closed to complete the package.

Another object of the present-invention' i's'to provide a bag for usein' a package of' thi's'kind" which is of simple and strong construction"; in which the inner carton may be easily'and quickly inserted, which provides adequate moistureproof" protection for the inner carton and the product; and which may be cheaply manufactured.

Another object of the invention is t'cr provide a novel and improved protector stripibrthe outer surface of a tacky adhesivecoating; such as a coating for the mouth of a bagor liner;-

The invention is illustrated, by WaYofeXam ple, in the accompanying drawings; in which-i Figure 1 is a view in persp'ecti've of'myimproved bag with one wall partly broken away;-

Fig. 2 is a view in perspective-of thebagwiththe inner carton inserted therein, one wallofi the: bag being partly broken away;

Fig. 3 is a similar view with the mouthlofi thebag closed;

Fig. 4 is a similar view of the upper portion of th bag and carton with the closed topof: the bagfolded down over the top of the carton Fig. 5 is a view in perspective: of. the. bag and: inner carton in inverted position", the-projecting bottom flaps of the bag. beingv shown foldedvinwardly over the bottom of thecarton;

Fig. 6 is a view in perspective showing the bag. and inner carton inserted in-an outer ca-rtomthe outer carton being ready to be closed;

Fig. 7 is a sectional'view, partly diagrammatical, taken on the line'll of-Fig. 6;

Fig. 8 is a transverse sectional'viewof thermaterial which is preferably usedinzthabag;

Fig. 9 is a view corresponding to: Fig; 1" ofv a.- modified form;

Fig. 10 is a view in perspe'ctive:orthetupper pontion of the bag onFig. 9fwhen" filled andabout to be closed;

2 Fig. I1 isa similar view of the bag when closed; Fig. 1 2 is-a detailsectional view onan enlarged sea-1e; taken on the line l2|2, of Fig. 10;

Fig. 13 is a similar View, taken on the line I3I3, of Fig. 11; and

lustra-ted in- Fig. 8. This material comprises two sheets of crinkled paper 2' which ar separately crinkled and arelaminat'ed together by means of asphaltib or other suitable adhesive.

The bag is made up of two sheets 5 and 6 oi-this laminated paper which are arranged one upon- :The longitudinal margins of the two sheets are v se'eu re'd together'byadhesive [0 so as to form'- ab'agtube having'side s'eams I l "l lie'projecting end or margin 8 of the sheet' 5' is folded" over and securedb'y adhesive l-3 to the corresponding end margin of the sheet Gso as to formaseam l4 closing said end or bottom of the bag-tube;

The ihn'er side of'theprojecting end or margin 1 of the sheet 6 and'the inner side of the margin of the adjacent end of the sheet 5 are coated with adhesive 15. A strip 12 of cellophane or other suitable material" may be placed over the thus formed' two-marginal strips of adhesive l5 so-asto protect-them.

The adhesive employed-for laminating the crinkled paper 2', forthe side and-bottom seams, and also for the mar-gins of the side walls at the mouth ofthe bag is prefreably made of asphalt containing a suitablefiller or plasticizer. Ihavefou'nd that: adhesive of this kind remains flexible and non-brittle evenat low temperatures, and tacky at"normal temperatures.

The-bag thus formed is of suitable size to receive a carton 9 of corrugated cardboard; the carton being placed in the bag either before or afterth'e oarton isfilled with the product to be packaged: This'cart'on-may be of the usual form fon'packages of-"thiskind having vertical side walls and flat top and bottom walls;

Owing;- to the flexibility and circumferential stretchability of the material of the bag, the insertion of the carton 9 enables the bag to tightly embrace the vertical sides of the carton as shown. The bottom of the carton causes the bottom of the bag to flatten out, and the bottom seam of the bag to be folded tightly against the bottom of the carton and the side seams of the bag to be folded over tightly against the side walls of the carton. The projecting V-shaped corner flaps [6 may be either folded underneath against the bottom of the bag as shown or folded upwardly against the sides of the bag.

When the carton has been thus placed in the bag and the top of the carton closed, the side walls of the mouth of the bag may be brought together as shown in Fig. 2. Then the asphalt coated projecting end I of the side wall 6 of the bag may be readily folded over the asphalt coated upper margin of the side wall of the bag. The asphalt thus applied to the upper margins of the side walls of the bag is sufficiently tacky that when the end 1 is folded over and pressure is applied by means of rollers, or other suitable means, the adhesive securely closes and seals the upper end or mouth of the bag.

When the bag has thus been closed, the mouth portion thereof projecting above the top of the carton, may be folded downwardly and the projecting corners I8 folded inwardly and downwardly as shown in Fig. 4 so as to form a substantially flat top surface.

The bag with the enclosed inner carton is then ready to be placed in the outer carton 20. In placing it in the outer carton the V-shaped bottom flaps l6, as previously stated, may be either folded downwardly and inwardly flat against the bottom side of the bag, as shown in Fig. 5 or 7, or may be folded against the vertical sides of the bag. Also, the top of the bag may be folded as above described either before or after being placed in the outer carton. When the bag is thus inserted in the outer carton the top of this carton may be closed to complete the package.

It will be apparent that my improved bag as above described is capable of closely embracing the vertical sides of the inner carton and provides effective moisture-proof protection for the inner carton and the product; that the inner carton may be easily inserted in the bag and the bag securely sealed; that the sealed bag with the enclosed filled inner carton may be easily inserted in the outer carton and the outer carton closed; and that the completed package is strong and durable, and capable of withstanding rough usage during shipment.

In the form shown in Figs. 9 through 14, the upper margin 22 of one side wall of the bag is folded back upon itself. The outer side of this margin 22 and the inner side of the adjacent margin 24 of the other side wall are coated with suitable asphaltic or other adhesive 26 which remains tacky at normal temperatures and which when the two coated surfaces are brought together may be securely sealed by the application of either pressure alone or heat and pressure.

With this construction, after the bag is filled, it may be easily and securely closed by folding upwardly the margin 22 against the margin 24 and applying pressure or heat and pressure to the margins to complete the seal. Separate strips of cellophane 28 may be applied over the adhesive coatings 26 so as to protect the adhesive during shipment. The edges of the cellophane strips should project beyond the edges of the strips of adhesive with the inner edges of the strips over- 4 lapping, so as to prevent spreading of the adhesive beyond the edges of the strips. When the bag is to be used these strips of cellophane may be removed to expose the adhesive.

Bags or liners of the type of my improved bag or liner may be made of considerable width, the standard width being 96 inches, and it has been difiicult for the packer to remove the cellophane strips such as strips 28 from the adhesive especially in the case of the wider bags. To overcome this, I have provided a loop 30 in each cellophane strip through which the packer may insert his finger or otherwise grasp the loop and easily rip the strip from the adhesive (Figs. 9 and 14). In the case of the wider bags at least, the loop is preferably made in each strip substantially midway between its ends, so as to reduce the distance the strips are removed at opposite sides of the loop.

While it is preferred that the bag be made of laminated crinkled paper as described, it will be apparent that in certain instances it may be made of other material, such as plain paper, paper attached to textile fabric, and reinforced paper. It will also be apparent that certain features may be employed in other types of bags, such as bags made of a single sheet of paper or other material, and in case the bag is of the tubular type the folded over margin of the modified form may be provided by slitting the longitudinal edges of the bag at the mouth thereof previously to folding down the margin.

It will be noted that in both forms, the strips of adhesive for closing both the bottom and top of the bag extend across and form continuations of the adhesive of the side seams. This ensures maximum strength at the corners and effectively prevents sifting or leakage.

As will be evident to those skilled in the art, my invention permits various modifications without departing from the spirit thereof or the scope of the appended claims.

What I claim is:

l. A bag of the class described, comprising two sheets of crinkled paper having the crinkles extending longitudinally thereof, said sheets being arranged in superposed relation with one end of each sheet projecting a distance beyond the corresponding end of the other sheet, the irmer sides of the longitudinal margins of the sheets being adhesively secured together to form the side seams for the bag, and the projecting end margin of one sheet being folded over and secured to the corresponding margin of the other sheet to form a closed bottom for the bag, and pressure-sensitive adhesive coating the corresponding margins of the other ends of the sheets, the latter adhesive coating connecting the adjacent ends of the adhesive that secures said longitudinal margins of the sheets together.

2. A bag of the class described, comprising two sheets of crinkled paper having the crinkles extending longitudinally thereof, each of said sheets being made of a plurality of plies of crinkled paper laminated together by means of a layer of asphaltic adhesive, said sheets being arranged in superposed relation with one end of each sheet projecting a distance beyond the corresponding end of the other sheet, the inner sides of the longitudinal margins of the sheets being adhesively secured together to form the side seams for the bag, and the projecting end margin of one sheet being folded over and secured to the corresponding margin of the other sheet to form a closed bottom for the bag, and adhesive coat- 5 ing the corresponding margins of the other ends of the sheets.

3. A bag of the class described comprising two sheets of cringled paper having their crinkles extending longitudinally of the bag, each sheet forming a side wall of the bag, said sheets being arranged in superposed relation with strips of adhesive securing the inner sides of the longitudinal margins thereof together to form the side seams of the bag, the margin at one end of one of the side walls being folded over the corresponding edge of the other side wall and adhesively secured to said side wall to form the bottom of the bag, the ends of the walls of the mouth of the bag projecting one beyond the other, and the corresponding margins of the side walls at the mouth of the bag being coated with normally tacky asphaltic adhesive, whereby upon folding the projecting end of one Wall over the corresponding end of the other wall the mouth of the bag may be closed, said asphaltic adhesive that connects the margins of the mouth of the bag connecting the adjacent ends of said longitudinal- 1y extending strips of adhesive.

4. A bag of the class described, comprising two sheets of crinkled paper having their crinkles extending longitudinally of the bag, each sheet forming a side wall of the bag, said sheets being arranged in superposed relation with the strips of adhesive securing the inner sides of the longitudinal margins thereof together to form the side seams of the bag, the margin at one end of one of the side walls being folded over the corresponding edge of the other side wall and ad-' strips of adhesive.

JAMES F. DOY

REFERENCES CITED lhe following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 820,071 Smith May 8, 1906 1,145,093 Swift July 6, 1915 1,224,809 Swift May 1, 1917 1,614,993 Rothermel Jan. 18, 1927 1,691,782 Morrill et al Nov. 13, 1928 2,067,948 Y Potdevin Jan. 19, 1937 2,075,166 Brady 'Mar. 30, 1937 2,205,529 Heywood June 25, 1940 2,215,989 Wolf Sept. 24, 1940 2,333,587 Salfisberg Nov. 2, 1943 2,384,223 Wilbur Sept. 4, 1945 FOREIGN PATENTS Number Country Date 514,109 Great Britain Oct. 31, 1939 

